225405510523 has 4 divisors (see below), whose sum is σ = 225406529008. Its totient is φ = 225404492040.

The previous prime is 225405510521. The next prime is 225405510587. The reversal of 225405510523 is 325015504522.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 225405510523 - 2¹ = 225405510521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225405510521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21648 + ... + 671773.

It is an arithmetic number, because the mean of its divisors is an integer number (56351632252).

Almost surely, 2^225405510523 is an apocalyptic number.

225405510523 is a deficient number, since it is larger than the sum of its proper divisors (1018485).

225405510523 is an equidigital number, since it uses as much as digits as its factorization.

225405510523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1018484.

The product of its (nonzero) digits is 60000, while the sum is 34.

The spelling of 225405510523 in words is "two hundred twenty-five billion, four hundred five million, five hundred ten thousand, five hundred twenty-three".